Reduced Sunlight Contributes to Winter Weight Gain

Discover the tools and techniques that will empower you to immediately take charge of your health and well-being in ways you never knew were possible.

I agree to have my personal information transfered to AWeber ( more information )

No spam guarantee.

We usually believe our holiday food consumption is the cause of the extra pounds we put on during the winter. While that may be true in part, researchers at the University of Alberta are the first to observe lack of sunlight makes our cells store more fat.

Lack of sunlight during Canada’s gloomy winters may be partly to blame for why we tend to gain weight during this season.

We may have a new reason, in addition to vitamin D generation, to bask in a little sunshine.

A breakthrough study by University of Alberta researchers has shown the fat cells that lie just beneath our skin shrink when exposed to the blue light emitted by the sun.

“When the sun’s blue light wavelengths—the light we can see with our eye—penetrate our skin and reach the fat cells just beneath, lipid droplets reduce in size and are released out of the cell. In other words, our cells don’t store as much fat,” according to Peter Light, senior author of the study, who is a professor of pharmacology and the director of the U of A’s Alberta Diabetes Institute.

“If you flip our findings around, the insufficient sunlight exposure we get eight months of the year living in a northern climate may be promoting fat storage and contributing to the typical weight gain some of us have over winter,” added the Dr. Charles A. Allard Chair in Diabetes Research.

Light cautions the finding is only an initial observation and pursuing exposure to sunlight is not a safe or recommended way to lose weight.

“For example, we don’t yet know the intensity and duration of light necessary for this pathway to be activated.”

Discovery Raises More Questions

However, he noted the discovery opens up new avenues of future scientific exploration which could someday lead to pharmacological or light-based treatments for obesity and other related health issues such as diabetes.

“Maybe this mechanism contributes to setting the number of fat cells we produce in childhood—thought to stay with us into adulthood,” he speculated.

“Obviously, there is a lot of literature out there suggesting our current generation will be more overweight than their parents, and maybe this feeds into the debate about what is healthy sunshine exposure.”

The researchers made the discovery while investigating how to bioengineer fat cells to produce insulin in response to light to help patients with Type 1 diabetes.

“It was serendipitous,” said Light, adding that his name is an ironic coincidence since light is not his primary field of research. “We noticed the reaction in human tissue cells in our negative control experiments, and since there was nothing in the literature, we knew it was important to investigate further.”

Link to Seasonal Affective Disorder?

Based on these findings, the fat cells we store near our skin may be a peripheral biological clock, said Light.

“It’s early days, but it’s not a giant leap to suppose that the light that regulates our circadian rhythm, received through our eyes, may also have the same impact through the fat cells near our skin.”

He explained that the molecular pathway they discovered was first identified as being activated by the eye when exposed to the blue wavelengths in sunlight.

“That’s why you are not supposed to look at digital devices before bed, because they emit the same blue light the sun does, which signals us to wake up,” he explained.

“Well, perhaps that pathway—exposure to sunlight that directs our sleep-wake patterns—may also act in a sensory manner, setting the amount of fat humans burn depending on the season. You gain weight in the winter and then burn it off in the summer.”

This could be an evolutionary process, supported by the fact that, unlike many other mammals, our fat is spread out all over our bodies just underneath our skin, he added.

“Our initial observation certainly holds many fascinating clues for our team and others around the world to explore.”

Leave a Reply

Your email address will not be published. Required fields are marked *

Name

Email

Website

Elaine Ferguson, MD is a pioneer in the field of integrative and holistic medicine. She’s a graduate of Brown University, Duke University School of Medicine and completed her post-graduate training at the University of Chicago. During her trailblazing career she served as the founding medical director of the nation’s first Independent Practice Association (IPA) of chiropractors to provide primary care in a managed care setting, and practiced at the Cancer Treatment Centers of America. Also, Dr. Ferguson taught mind-body medicine at one of the nation’s first graduate level holistic medicine programs. She is the host of the acclaimed PBS pledge special SuperHealing Secrets currently airing nationwide, and has written several books, including the international bestseller SuperHealing: Engaging Your Mind, Body, and Spirit to Create Optimal Health and Well-Being. As a wellness consultant, and speaker, she’s lectured extensively at conferences, universities and medical schools, consulted with businesses, government agencies, not-for-profits, faith based organizations, and testified on a Congressional alternative medicine panel.

Disclaimer
The information contained on this website is for informational purposes only. It has not been evaluated by the FDA. The information is not intended to prevent, treat, diagnose or cure any illness or disease. All material provided on www.drelaine.com is only for the education of the reader. You should always consult with your physician or other licensed health care provider with any questions you may have regarding a medical condition regarding your health and/or medical condition, and before undertaking any changes in your exercise, eating habits, diet, physical therapy or other health program. This website does not recommend self-management of one’s health care. Images, text and logic are copyright protected. All rights are explicitly reserved without prejudice, and no part of this website may be reproduced except by written consent. Copyright. All rights remain in force. Removing this notice forfeits all rights to recourse.